biodex ATOMLAB 500, Руководство по эксплуатации и обслуживанию, Страница: 139 / 212

the system-listed isotope Half Life. It is the user’s responsibility to determine if this variance is
acceptable.
Half Life Verification Application
The Half Life Verification Application allows the user to select the isotope, set test parameters;
select either two or three readings, and set the elapsed time between the readings. The time
can be set between 1 minute and 60 minutes. The user can also enter the lot number. When the
test is complete, print the results from the Half Life Verification History screen. The results
show the preset Half Life for the isotope selected and the calculated Half Life from the two or
three activity readings.
NOTE: It is up to the user to decide if this variance is acceptable or if there are too many
contaminants in the isotope to use it.
Figure 7.11. Half Life Verification Screen.
To Perform a Half Life Verification:
1. At the Home screen, touch <Nuclear Pharmacy>. The Nuclear Pharmacy screen is displayed.
2. Touch <Half Life Verification>. The Half Life Verification screen is displayed.
3. Make sure there are no sources near the dose calibrator chamber.
4. Touch <Select Isotope> to change the isotope from the isotope displayed at the top of the
screen. The user can select any isotope from the isotope list that is in the dose calibrator.
Figure 7.12. Select Isotope Screen.